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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 332 · 40 questions
TalentJR

The trick (Split and double): Split the number into tens and ones: 37 = 30 + 7. Double each part (30 → 60, 7 → 14) — or halve each part. Add the two answers: 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.Half of 152 =
  2. 2.Double 16 =
  3. 3.Half of 34 =
  4. 4.Double 74 =
  5. 5.Half of 184 =
  6. 6.Half of 26 =
  7. 7.Double 23 =
  8. 8.Half of 104 =
  9. 9.Double 14 =
  10. 10.Double 47 =
  11. 11.Half of 102 =
  12. 12.Double 83 =
  13. 13.Half of 32 =
  14. 14.Half of 176 =
  15. 15.Half of 68 =
  16. 16.Double 69 =
  17. 17.Double 51 =
  18. 18.Double 42 =
  19. 19.Half of 174 =
  20. 20.Half of 132 =
  21. 21.Half of 154 =
  22. 22.Double 34 =
  23. 23.Half of 82 =
  24. 24.Half of 172 =
  25. 25.Half of 114 =
  26. 26.Half of 192 =
  27. 27.Half of 98 =
  28. 28.Double 49 =
  29. 29.Double 88 =
  30. 30.Double 68 =
  31. 31.Half of 56 =
  32. 32.Double 92 =
  33. 33.Double 76 =
  34. 34.Double 21 =
  35. 35.Half of 182 =
  36. 36.Half of 108 =
  37. 37.Half of 36 =
  38. 38.Double 46 =
  39. 39.Double 45 =
  40. 40.Double 29 =

Answer key

  1. 76
  2. 32
  3. 17
  4. 148
  5. 92
  6. 13
  7. 46
  8. 52
  9. 28
  10. 94
  11. 51
  12. 166
  13. 16
  14. 88
  15. 34
  16. 138
  17. 102
  18. 84
  19. 87
  20. 66
  21. 77
  22. 68
  23. 41
  24. 86
  25. 57
  26. 96
  27. 49
  28. 98
  29. 176
  30. 136
  31. 28
  32. 184
  33. 152
  34. 42
  35. 91
  36. 54
  37. 18
  38. 92
  39. 90
  40. 58

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